IRT-6644-DDT & IRT-6644-DDR:

Quad 12G/6G/3G/HD/SD-SDI/ASI
Fibre Optic Link

FEATURES:

Brochure  

User Manual  
   
Transports up to four 12G-SDI, 6G-SDI, 3G SDI, HD SDI, SD-SDI or ASI signal rates.
   
Suitable for 4K/UHD video.
   
Path lengths up to 16 dB1 optical path loss using 9/125 µm single mode fibre.
   
DashBoard™ software monitoring and control.


GENERAL:

With the advent of 4K/UHD television, distribution of higher data rate video signals up to 11.88 Gb/s (12G-SDI) has become necessary which can't always be achieved via coaxial cable.

The IRT-6644-DDT and IRT-6644-DDR are quad transmit and receive modules designed principally for use as a serial data fibre optic transmission link for 12G-SDI, 6G-SDI, 3G-SDI, HD-SDI or SD-SDI applications conforming to SMPTE standards 2082-1, 2081-1, 424M, 292M and 259M-C using 9/125 µm single mode fibre. This enables the use of space saving fibre optic cable for reliable transmission of digital video signals over lengths greater than can be achieved with coaxial cable.

In addition, the link may be used for ASI transport streams for use with MPEG compressed video streams or other 270 Mb/s type data.

The transmitter uses a pair of dual lasers at different wavelengths that are optically combined to a single optical output. Inputs 1 to 4 are independent from each other allowing a mix of signal rates.

The receiver uses a pair of dual PIN detectors with signal conditioning and reclocking circuits. The data rates are automatically set to match the 12G-SDI, 6G-SDI, 3G-SDI, HD-SDI or SD SDI/ASI rates dependent on the actual input data rates to the transmitter.

The IRT-6644-DDT and IRT-6644-DDR are designed to fit the openGear® standard 2RU frames which allow a mixture of cards from various manufacturers to be mounted within the same frame.

Remote monitoring is possible via openGear's DashBoard™ control software, which is available as a free download.
NOTE:
1
16 dB path loss at HD/SD, 15 dB at 3G and 12 dB at 12G/6G. Fitted with PIN detector.




TECHNICAL SPECIFICATIONS:

IRT-6644-DDT:
Input serial data signal
11.88 Gb/s (12G-SDI) to SMPTE 2082-1;
5.94 Gb/s (6G-SDI) to SMPTE 2081-1;
2.97 Gb/s (3G-SDI) to SMPTE 424M;
1.485 Gb/s (HD-SDI) to SMPTE 292M;
270 Mb/s (SD-SDI) to SMPTE 259M-C and DVB-ASI.
Input Impedance
75 Ω.
Input Return Loss
> 15 dB 5 MHz to 1.5 GHz;
> 10 dB 1.5 GHz to 2.97 GHz.
Automatic Cable Compensation
> 50m at 11.88 Gb/s (12G-SDI) with RG6/U;
> 100m at 5.94 Gb/s (6G-SDI) with RG6/U;
> 150 m at 2.97 Gb/s (3G-SDI) with Belden 1694A;
> 150 m at 1.485 Gb/s (HD-SDI) with Belden 1694A;
> 300 m at 270 Mb/s (SD-SDI/ASI) with Belden 8281.
Input Connector
 4 x BNC on rear assembly.

IRT-6644-DDR:
Number of Outputs
4 data reclocked, AC coupled.
Output Level
800 mV ± 10%.
Output Impedance
75 Ω.
Output Return Loss
> 15 dB 5 MHz to 1.5 GHz;
> 10 dB 1.5 GHz to 2.97 GHz.
Output Rise and Fall Time
< 135 ps at 2.97 Gb/s and 1.485 Gb/s;
> 0.4 ns and < 1.5 ns at 270 Mb/s.
Intrinsic Jitter
< 0.3 UI at 2.97 Gb/s reclocked;
< 0.2 UI at 1.485 Gb/s reclocked;
< 0.1 UI at 270 Mb/s reclocked.
Output Connector
4 x BNC on rear assembly.

Optical:
IRT-6644-DDT Optical Output
4 x 0 dBm +5/-0 dB CWDM DFB lasers, optically combined.
IRT-6644-DDR Optical Input
PIN detector, (0 dBm to) -12 dBm at 12G/6G-SDI,
-15 dBm at 3G-SDI and -16 dBm at HD/SD-SDI.
Available Wavelengths
CWDM DFB laser pairs - 1510nm/1530nm & 1550nm/1570nm (standard).
Optical Path Loss
0 to 12 dB at 12G/6G-SDI, 15 dB at 3G-SDI and 16 dB at HD/SD-SDI.
(Optical path loss = Laser O/P power - Detector I/P power)
Optical Fibre
Designed for use with 9/125 µm single mode fibre.
Optical Connector
1 x SC/PC (standard) on rear - direct connection to main card

Power Requirements:
Voltage
+ 12 Vdc.
Power consumption
< 5VA.

Other:
Temperature range
0 - 50°C ambient.
Mechanical
Suitable for mounting in an openGear® 2RU rack chassis.
Dimensions (openGear® standard)
33.6 mm x 2U x 325 mm.

Supplied accessories
Rear connector assembly.
Optional Accessories
On-board 1310/1550nm WDM6 combiner.

Ordering
IRT-6644-DDT
IRT-6644-DDT fitted with standard 1510nm/1530nm & 1550nm/1570nm laser pairs, programmed with DashBoard™ control.
IRT-6644-DDR
IRT-6644-DDR fitted with dual PIN detector pairs, programmed with DashBoard™ control.











IRT-6644-DDT
IRT-6644-DDR


Due to our policy of continuing development, these specifications are subject to change without notice.